[Bugs] [Bug 1387494] Files not deleted from arbiter brick after deletion from the mount point.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1387494

Ravishankar N <ravishankar at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
        Environment|                            |If the data bricks of the
                   |                            |arbiter volume get filled
                   |                            |up, further creation of new
                   |                            |entries might succeed in
                   |                            |the arbiter brick despite
                   |                            |failing on the data bricks
                   |                            |with ENOSPC and the
                   |                            |application (client) itself
                   |                            |receiving an error on the
                   |                            |mount point. Thus the
                   |                            |arbiter bricks might have
                   |                            |more entries. Now when an
                   |                            |rm -rf is performed from
                   |                            |the client, if the readdir
                   |                            |(as a part of rm -rf) gets
                   |                            |served on the data brick,
                   |                            |it might delete only those
                   |                            |entries and not the ones
                   |                            |present only in the
                   |                            |arbiter. When the rmdir on
                   |                            |the parent dir of these
                   |                            |entries comes, it won't
                   |                            |succeed on the arbiter
                   |                            |(errors out with
                   |                            |ENOTEMPTY), leading to it
                   |                            |not being removed from
                   |                            |arbiter.
                   |                            |
                   |                            |Workaround: If the deletion
                   |                            |from the mount did not
                   |                            |complain but the bricks
                   |                            |still contain the
                   |                            |directories, we would need
                   |                            |to remove the directory and
                   |                            |its associated gfid symlink
                   |                            |from the back end. If the
                   |                            |directory contains files,
                   |                            |they (file + its gfid
                   |                            |hardlink) would need to be
                   |                            |removed too.



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